Graduated protector for cylinders and the like



NOV 17, 1931. P. w. WAGENSELLER 1,832,436

GRADUATED PROTECTOR FOR CYLINDERS AND THE LIKE Filed June 18, 192e nhmhnlmlnl Ulllglllll,

Patented Nov. 17, 1.931

UNITED STATES 'f f 1,832,436 y PATENT OFFICE PAUL WELDON WAGENSELLER, OF OHIOAeO, ILLINOIS, AssIGNOR or ONE-HALF 'rO MARK IsAAos, OF MINNEAPOLIS, MINNESOTA GRADUATED PROTECTOR FOR CYLINDERS AND THE LIKE Application led June 18,

My invention has for its object the provision of a graduated casing or protector for removably holding various types of burettes, pipettes, cylinders, graduates and the like,

and to thisfend, generally stated, the inveni tion consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

The above transparent devices, as now l0 manufactured, have scales or graduations cut or otherwise indicated thereon and the cost thereof is comparatively high, and said devices are very easily broken. The primary obj ect of the invention is to provide the above type of device thereon and removably mount the same in casings having scales or graduations indicated vthereon and provided with sight openings through which the contents in l said devices may be seen and measured or compared with said scale or graduations.

The cost of manufacturing devices 'of this type, without any scales or graduations indicated thereon, is relatively low.

In the accompanying drawings, which'il- 5 lustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a face view showing one form of the invention with some parts broken away and sectioned and in which is mounted a certain type of cylinder;

Fig. 2 is a back view of the same;

Fig. 3 is a horizontal section taken on the line 3*?) of Fig. 1;

l Fig. 4 is a fragmentary detail view principally in section taken on the line 4--4 of Fig. 1;

Fig. 5 is a fragmentary face view showing another form of the invention with a portion thereof shown in longitudinal central section and having mounted therein a certain type of pipette or burette;

Fig. 6 is a perspective view of the upper end portion of the linvention as shown in Fig. 5 5 with the pipette removed; and

Fig. 7 is a horizontal section taken on the line 7--7 of Fig. 6, on an enlarged scale.

Referring first to the invention as shown in Figs. 1 to 4, inclusive, the numeral 8 indicates a metallic casing mounted on a base 192s. serial Na'asaals.

9 for releasably holding a cylinder m of the type illustrated. This casing 8 is in the form oI a cylindrical tube, the lower end portion of which is telescoped onto a reduced upper f portion of the base 9 and rigidly secured 55 thereto by screws 10. In the upper end of the casing 8 1s a notch'll arranged to receive the lip g/ of the cylinder as. aid cylinder as shown, is made of plain transparent glass without any-'markings thereon whatsoever. 60 The base t) is of sucn weight as to securely hold the casing 8 in an upright position Without danger oI being easily upset.

In the front of the casing 8 is a long upright sight opening l2 in the form of a rela- 65 tively narrow slot and in the back of said casing diametrically opposite said sight opening is a light passage l. rthis light passage l5 is of the same length as the sigiit opening 12, but materially Wider.

In forming the sight opening 12 in the casing 8, a portion OI the stock Irom which said casing is made is left intact to afford a crosstie member 14 that connects the longitudinal edge portions of said casing and ref inforces the same. The casing 8 is also reinforced at the light passage 13 by a pair of vertically spaced crosstie members 15 Iormed in the same manner as the crosstie member 14.

It isl important to note that the crosstie members 14. and 15 extend obliquely across the 'respective' openings so as -not to obstruct a view of the -level of the material in the cylinder' in case it comes in line with one of said crosstie members.

The casing 8 is provided with a clamp 16 for yieldingly holding the cylinder therein and `which clamp isformedby cutting longitudinal parallel-slitslr in thecasing 8 at diametrica-lly opposite Apoints and bending the stock between said slits 17 inward, as shown in Fig. Obviously, the pressure with which this clamp 16 engages the cylinder @may be varied by simply bending the stock either inward or outward.V

Twoscales 18 are indicated on the casing Y 8, one at eachrside of the sight opening 12 by cutting graduations and identifying numerals therein.` It will be noted that one of the scales 18 reads from the bottom of the 100 casing 8 up and the other from the top down and that the last or lowermost graduat-ions of the two scales 18 are aligned the one with the other and with the lower end of the sight opening 12.

In order to secure the correct reading of the contents in the cylinder it is necessary that the bottom of said cylinder at the interior thereof must be in true alignment with the bottom of the sight opening 12 and hence the respective graduations. To thus position the cylinder a; there is provided an adjnstingI screw 19 on which the cylinder a: is supported. This adjusting screw 19 extends axially through the base 9 from the under side thereof and at the axis thereof, has screw-threaded engagement with said base, projects into the casing 8 and Supports said cylinder, as shown in Figs. 1 and e.

bviously, by turning the screw 19 the cylinder may be raised and lowered in the casing 8 to properly set the same in respect to the lowerinost graduations on the scales 18.

F rom the above description it is evident that the contents of the cylinder may be clearly seen through the sight opening l2 and the reading taken by either one of the scales 18. rIhe wide light passage 13 makes it extremely easy to see the contents in the cylinder m through the sight opening 13. The casing 8 is so designed as to fully protect the cylinder :c but in case it is broken a new one may be substituted therefor at comparatively small cost. Any desired number of cylinders may be used in connection with a single casing. Sufficient light passes through the relatively wide light passage 13 to make it extremely easy to see the contents of the cylinder a2.

Referring now to the invention as shown in Figs. to 7, inclusive, the numeral 20 indicates a casing for a pipette or burette z of a given type and without any scale or graduations. This casing 2O is in the form of a cylindrical tube of the same diameter throughout its entire length and has in the front thereof a sight opening 2l and in the back thereof a light passage 22. The casing 21 has two scales 23 located one at each of the longitudinal edge portions of said casing at the sight opening 21. One of these scales is arranged to read from the bottom of the pipette .a up and the other from the top down. '1` he sight opening 2l and the light passage 22 are each in the form of a longitudinally eX- tended opening and the latter is materially wider than the former.

rIhe casing at the sight opening 2l is provided with longitudinally spaced crosstie members 24 and at the light passage 22 with crosstie members 25. These crosstie members 24 and 25 are formed in the same manner as the crosstie members 14 and 15 and are also extended obliquely through respective openings for the same reason. The pipette z is held in the casing 20 by a friction clamp 26 formed by cutting a pair of circumferentially spaced longitudinally extended slots 27 in the casing 20 and pressing the stock there between inward, as best shown in F ig. 7. By forming the light passage 22 diametrically opposite the sight openinfr 21 and making the same relatively wide, suihcient light passes through the pipette e to make it easy to see the contents therein. In the pipette is broken another one may be subsituted therefor at a comparatively small cost. VJhile only two different types of the invention are shown in the drawings7 it is, of course, understood that the casings 0r protectors may take various different shapes to hold dierent types of containers.

What I claim is:

1. A device of the class desciibed compris ing a cylindrical casing for holding a transparentrcontainer with freedom for end wise sliding movement and having a relatively heavy base and a longitudinally extended sight opening exposing the container and its contents, there being a scale on the casing at the sight opening by which the contents of the container may be read, and an adjusting device on which the container is supported for endwisc adjustment with respect to the casing.

2. A device of the class described comprising a cylindrical casing for holding a transparent container with freedom for endwise movement and having a relatively heavy base and a longitudinally extended sight opening exposing the container and its contents, there beine' a scale on the casing at the sight opening which the contents of the container may be read, and an adjusting screw in the base on which the container is supported for endwise adjustment with respect to the scale.

In testimony whereof I affix my signature.

PAUL IVELDON VAGENSELLEB. 

